50000039 has 4 divisors (see below), whose sum is σ = 52631640. Its totient is φ = 47368440.

The previous prime is 50000021. The next prime is 50000047. The reversal of 50000039 is 93000005.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 50000039 - 2⁸ = 49999783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49999981 and 50000026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50000059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1315772 + ... + 1315809.

It is an arithmetic number, because the mean of its divisors is an integer number (13157910).

Almost surely, 2^50000039 is an apocalyptic number.

50000039 is a deficient number, since it is larger than the sum of its proper divisors (2631601).

50000039 is a wasteful number, since it uses less digits than its factorization.

50000039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2631600.

The product of its (nonzero) digits is 135, while the sum is 17.

The square root of 50000039 is about 7071.0705695814. The cubic root of 50000039 is about 368.4032456488.

The spelling of 50000039 in words is "fifty million, thirty-nine", and thus it is an aban number and an uban number.